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Subject: Re: g++ with -fprofile-dir flag has a bug (backslash instead of
 forward-slash issue)
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Date: Sun, 12 Apr 2020 12:56:00 +0000
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From: JonY via Cygwin <cygwin AT cygwin DOT com>
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From: JonY <10walls AT gmail DOT com>
To: cygwin AT cygwin DOT com
Message-ID: <19d59a11-f6ca-8898-a188-92bfaae4d7ac AT gmail DOT com>
Subject: Re: g++ with -fprofile-dir flag has a bug (backslash instead of
 forward-slash issue)
References: <CAJn6YFC-brTm=nkC9_MdgZp3rj+NeMSctUYxk-8wsUThxQmRfQ AT mail DOT gmail DOT com>
 <53361671-369b-0fac-039c-65150ea859ac AT gmail DOT com>
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On 4/12/20 11:39 AM, John Selbie wrote:
> I would file a bug, but that link you provided takes me to a sign-up pa=
ge
> that says, "Account creation restricted.  Please contact ... response
> within 24 hours..."
>=20
> A quick cursory glace of GCC sources would suggest the issue is in
> \gcc\coverage.c. This is a snippit of a function that builds the mangle=
d
> path for the .gcda file.
>=20
>           if (profile_data_prefix)
>         {
> #if HAVE_DOS_BASED_FILE_SYSTEM
>      const char *separator =3D "\\";
>     #else
>      const char *separator =3D "/";
>     #endif
>      filename =3D concat (getpwd (), separator, filename, NULL);
>      filename =3D mangle_path (filename);
>      len =3D strlen (filename);
>     }
>=20
> I'm not an expert on building gcc.  I just suspect that somewhere in th=
e
> build chain  HAVE_DOS_BASED_FILE_SYSTEM is getting defined for or by cy=
gwin.
>=20
> Another cursory search of gcc sources suggest HAVE_DOS_BASED_FILE_SYSTE=
M is
> defined by this preprocessor stuff:
>=20
> #if defined(__MSDOS__) || defined(_WIN32) || defined(__OS2__) || define=
d
> (__CYGWIN__)
> #  ifndef HAVE_DOS_BASED_FILE_SYSTEM
> #    define HAVE_DOS_BASED_FILE_SYSTEM 1
> #  endif
>=20
> Still a gcc bug?  I'm guessing so.
>=20

The file is in gcc, so yes.


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